package chapter05.e1;

public class E4 {
    public static void main(String[] args) {
        String s = "itcast";
        System.out.println("将it替换成cn.it的结果:" + s.replace("it","cn.it"));
        String s1 = "itcast";
        System.out.println("去除字符符串两端空格后的结果:" + s1.trim());
        System.out.println("去除字符串中所有空格后的结果:" + s1.replace(" "," "));

    }
}
